218563090433 has 8 divisors (see below), whose sum is σ = 220513733088. Its totient is φ = 216612736704.

The previous prime is 218563090411. The next prime is 218563090451. The reversal of 218563090433 is 334090365812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218563090433 is a prime.

It is a super-2 number, since 2×218563090433² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218563090453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624310 + ... + 1753712.

It is an arithmetic number, because the mean of its divisors is an integer number (27564216636).

Almost surely, 2^218563090433 is an apocalyptic number.

It is an amenable number.

218563090433 is a deficient number, since it is larger than the sum of its proper divisors (1950642655).

218563090433 is a wasteful number, since it uses less digits than its factorization.

218563090433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144463.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 218563090433 in words is "two hundred eighteen billion, five hundred sixty-three million, ninety thousand, four hundred thirty-three".